Detainee Mohamedou Ould Slahi has finally had his hand-written memoir published after a six-year legal battle for them to be released.

And in the tell-all book, he claims two female guards forced him into a "degrading" threesome.

In his partially-redacted, he writes: "I would rather follow the orders and reduce the pain that would be caused when the guards come to play; the guards used every contact opportunity to beat the hell out of the detainee.

"As soon as I stood up, the two _______ took off their blouses, and started to talk all kind of dirty stuff you can imagine, which I minded less.

"What hurt me most was them forcing me to take part in a sexual threesome in the most degrading manner. Both _______ stuck on me, literally one on the front and the other older _______ stuck on my back rubbing ____ whole body on mine.

"At the same time they were talking dirty to me, and playing with my sexual parts."

In the book, named Guantanamo Diary, he also claims he was forced to eat during the month of Ramadan in 2003 – usually reserved for fasting during daylight hours.

His lawyer, Nancy Hollander, argues that her client has been in one of the most feared imprisonment camps in the world for thirteen years WITHOUT charge.

She said: "It's not that they haven't found the evidence against him.

"There isn't evidence against him.

She added: "He's in what I would consider a horrible legal limbo, and it's just tragic: he needs to go home."

The director of the American Civil Liberties Union's national security project said: "Mohamedou Slahi is an innocent man whom the United States brutally tortured and has held unlawfully for over a decade.

"He doesn't present a threat to the US and has never taken part in any hostilities against it."